Which change in a limiting factor would increase the carrying capacity for American pikas in a talus field within an alpine tundra?
A. increase in number of rock fragments
B. decrease in number of rock fragments
C. increase in American pika population size
D. decrease in American pika population size

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.